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Gentoo Linux Security Advisory                           GLSA 200804-29
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http://security.gentoo.org/ 
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  Severity: Normal
     Title: Comix: Multiple vulnerabilities
      Date: April 25, 2008
      Bugs: #215694
        ID: 200804-29

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Synopsis
=======
Multiple vulnerabilities in Comix may lead to execution of arbitrary
commands and a Denial of Service.

Background
=========
Comix is a GTK comic book viewer.

Affected packages
================
    -------------------------------------------------------------------
     Package          /  Vulnerable  /                      Unaffected
    -------------------------------------------------------------------
  1  media-gfx/comix     < 3.6.4-r1                        >= 3.6.4-r1

Description
==========
Comix does not properly sanitize filenames containing shell
metacharacters when they are passed to the rar, unrar, or jpegtran
programs (CVE-2008-1568). Comix also creates directories with
predictable names (CVE-2008-1796).

Impact
=====
A remote attacker could exploit the first vulnerability by enticing a
user to use Comix to open a file with a specially crafted filename,
resulting in the execution of arbitrary commands. The second
vulnerability could be exploited by a local attacker to cause a Denial
of Service by creating a file or directory with the same filename as
the predictable filename used by Comix.

Workaround
=========
There is no known workaround at this time.

Resolution
=========
All Comix users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=media-gfx/comix-3.6.4-r1"

References
=========
  [ 1 ] CVE-2008-1568
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1568 
  [ 2 ] CVE-2008-1796
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1796 

Availability
===========
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200804-29.xml 

Concerns?
========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at 
http://bugs.gentoo.org. 

License
======
Copyright 2008 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.5 
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